20/03/2010Vita ed energia dal Sole
Arc_Nebbia_Solare_30_105_03
30.105 J.W. Bloemer J.A. Eibling J.R. Irwin, Design of a basin-type solar still, (Battelle Memorial Institute, Columbus, Ohio, 19 may 1964). Step 3: Compacted dike given final shaping by hand. For large still, shaping could be by mechanical grader.